'The Mactaquac Project'
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Transcript of 'The Mactaquac Project'
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Our
Commitmentto youGeorge Porter February 5, 2014 The GAIA Project
The Mactaquac Project
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About Mactaquac
1968 in-service date Local hydro-power generation
660 MW rated capacity (about 20% of NBs peak need)
1.6 TWH annual energy (about 12% of NBs yearly need)
Capacity factor = 1.6TWh/(660MW*8760hrs/yr) = 27%
Other contributions to power system reliability
Regulation, load following, and reserve
Voltage support
System black start
Suffering from expansion of concrete
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0 1 2 3 4 5 6 7 8 910
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Generating to Match UsageOver One Day
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Generation with
lower fuel costs
(e.g. nuclear, coal)
Generation withmedium fuel costs
(e.g. natural gas)
Generation with
higher fuel costs
(e.g. diesel)
Hydro with no
fuel costs
Usage
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Alkali Aggregate Reaction (AAR)
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The dam is 8taller than whenit was built
The dams
expansion inwidth is 24
Asymmetricthicknessesimply morecomplexdeformations inother areas
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AAR Remediation
Growth rate has been steady and sustained,
with no sign of slowing down
Since 1985, a massive program of investigation
and remediation has been carried out
Our work is reviewed by a board of
international experts at least once a year to
ensure safety of the facility and value
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Reduce and Shift Demand
MactaquacsFuture
Studies indicate a 2030 end-of-life for theconcrete structures
Timely option analysis and decision-
making are required to address thisdeadline because:
the implications are significant
all options have long lead times
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Reduce and Shift Demand
Potential Options
Repower by replacing the spillway andpowerhouse
Do not repower and maintain the head
pond by replacing the spillway but not thepowerhouse
Restore the river/eliminate head pond
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There is no status quo or do nothing option.
The 2030 deadline is fixed.
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Timeline
2030
Decision
Gate
2016
Decision
Gate
2019Study 3
Options:
Repower Head Pond
River
Acquire
Approvals
forPreferred
Option
Perform Detailed Design & Site Work for Preferred Option
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Mactaquac Project
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Factors to Consider
Total costs, rates, capital cost, financing
Environment (e.g. river health, emissions)
Social impacts (on communities, jobs,
property owners, culture, recreation, etc.)
First Nations impacts
The value provided to the power system Uncertainty and risks
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Reduce and Shift Demand
Review and Approvals
Independent reviews to supplement approvalsrequired by law
Environmental approval (federal & provincial)
NB Power Board of Directors approval
Province of NB (utility owner) approval
Energy and Utilities Board approval
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Reduce and Shift Demand
Opportunities for Dialogue
Ongoing First Nations engagement
Ongoing public engagement
Environmental assessment consultations
Energy and Utility Board (EUB) process
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Contact Information
By email By regular mail By phone
[email protected] Mactaquac Project
NB Power
515 King Street
PO Box 2000
Fredericton, NBE3B 4X1
1-866-754-7727
If you or your group would like moreinformation about this project, or would like to
share your point of view, please contact us.
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mailto:[email protected]:[email protected]
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